The 12th of April is the 102nd day of the Gregorian calendar ( 103rd in leap years), thus remain still 263 days of the year.
- 3.1 Before the 19th century
- 3.2 19th century
- 3.3 20th century
- 3.4 21st century
Politics and World Affairs
- 0238: Gordian II, March 19-April 9 co-regent with his father, the Roman Emperor Gordian I. opposite, falls in the fight against Capellianus, the Emperor Maximinus Thrax opposite has remained loyal. On the same day his father commits suicide.
- 0467: At the suggestion of the mighty army master Ricimer Anthemius is charged with the support of the Eastern Roman Emperor Leo I, Emperor of the Western Roman Empire.
- 1229: The Treaty of Paris is the final stroke of the Albigensian Crusade. Count Raymond VII of Toulouse must accept significant territorial losses. Occitania is part of the Kingdom of France.
- 1433: In the Hague Treaty Jakobäa occurs at Straubing- Holland, the counties of Hainaut, Holland, Zeeland and Friesland to Philip of Burgundy from after it has her husband Frank of Borsselen kidnap leave because he fears for his inheritance after the Delft treaty of reconciliation.
- 1557: The governor of Quito, Gil Ramirez Davalos, founded by order of the Viceroy of Peru, the city of Santa Ana de los Cuatro Ríos de Cuenca in Ecuador today.
Science and Technology
Minor accidents are listed in the sub- items of disaster.
Nature and Environment
Entries of Athletics world records are located under the respective discipline under Athletics.
Before the 19th century
Before the 19th century
- 0238: Gordian I, Roman Emperor
- 0238: Gordian II, Roman emperor
- 0352: Julius I., Bishop of Rome, and thus pope since 337
- 1107: Burkhard von Fenis, Bishop of Basel
- 1111: Berthold II, Duke of Swabia
- 1125: Vladislav I, Duke of Bohemia from the House of Premyzslids
- 1206: Diethelm of Krenkingen; Abbot of Reichenau and Bishop of Constance
- 1257: malicious crowd ad -Dur, Sultana in Egypt
- 1488: Hinrich Castorp, Mayor of Lübeck
- 1550: Claude de Lorraine, duc de Guise
- 1555: Joan of Castile, daughter of the Catholic Kings of Spain
- 1602: Nicholas of Reusner, German legal scholar
- 1638: Shiro Amakusa, Japanese rebel
- 1643: Nicholas Hunnius, German Lutheran theologian
- 1645: Sigismund Heusner Wandersleben, German army officer and politician
- 1666: Johann Rudolf Wettstein, Swiss politician and mayor of Basel
- 1751: Sigismund Graf von Kollonitz, Archbishop of Vienna and Cardinal
- 1758: Antoine de Jussieu, French physicist and botanist
- 1782: Pietro Metastasio, Italian poet and Liberettist
- 1793: Hans Arentz, Norwegian judge and political and topographical author
- 1797: Johann Georg Bach, son of Johann Ernst Bach
- 2004: Rudolf Rolfs, German satirist and theater director
- 2005: Lucien Laurent, French footballer
- 2005: Barney Poole, American American football player
- 2006: Christiane Maybach, German actress
- 2006: Kazuo Kuroki, Japanese film director and screenwriter
- 2006: Günther Schwab, Austrian writer
- 2008: Dieter Eppler, German actor
- 2008: Patrick Hillery, Irish President
- 2009: Ephraim Silas Obot, Nigerian Bishop
- 2009: Eve Kosofsky Sedgwick, American gender theorist and author
- 2009: Marilyn Chambers, American actress
- 2009: John Maddox, British chemist and science writer
- 2010: Wolfgang Grassl, German ski racer and coach
- 2011: Miroslav Tichý, Czech photographer and painter
Holidays and observances
- Religious observances Peter Valdes, French preacher and church founder ( Protestant)
- St. Julius I., Roman bishop, pope and patron ( Catholic)
- St. Zeno of Verona, mauritanian -Roman bishop (Catholic and Orthodox)
- Name Days Julius
- State Holidays and observances Russia: Day of Cosmonauts
More entries contains the list of commemorative and action days.